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Buddleja sessiliflora

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Kingdom  Plantae
Family  Buddlejaceae
Rank  Species
Order  Lamiales
Genus  Buddleja
Buddleja sessiliflora httpsuploadwikimediaorgwikipediacommonsthu
Similar  Buddleja utahensis, Buddleja crotonoides, Buddleja marrubiifolia, Buddleja tubiflora, Buddleja forrestii

Buddleja sessiliflora, commonly known as Rio Grande butterfly-bush or Tepoz├ín, native to southern Arizona and the lower Rio Grande Valley of Texas in the United States as well as much of central and northern Mexico excluding the Chihuahua Desert and Baja California Sur. The shrub grows in thorn savannah, forests, riparian zones, along roadsides and in disturbed areas from sea level to 2,800 m. The species was first named and described by Kunth in 1818.

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Description

B. sessiliflora is a trioecious shrub or small tree 1.5 - 5 m tall, the trunk reaching < 7 cm diameter, bark is yellow-brown in color and fissured. The young branches are subquadrangular, yellowish, the youngest sections tomentose. The leaves vary widely, those at the base ovate, 9 - 23 cm long by 5 - 14 cm wide, the margins serrate, whilst the upper leaves are lanceolate or narrowly elliptic, 5 - 15 cm long by 1.5 - 3 cm wide, the margins entire or irregularly serrulate. The upper surfaces of both are generally glabrescent. The yellow leafy-bracted inflorescences are 6 - 25 cm long, comprising sessile or short pedunculate heads 1 - 3 cm in diameter, each with 10 - 35 flowers. The scent of the flowers is generally regarded as unpleasant, 'like ammonia but sweeter'. Ploidy: 2n = 76.

Cultivation

The species is known to be in cultivation in France at Le Jardin de Rochevieille. [1]

References

Buddleja sessiliflora Wikipedia


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Buddleja crotonoides
Buddleja forrestii
Buddleja marrubiifolia
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